IOT(Internet of Things) Multiple choice Questions and Answers

IOT(Internet of Things) Multiple choice Questions and Answers 

1. AMQP is a protocol of which layer?

A) Transport Layer
B) Application Layer
C) Network Layer
D) Session Layer

ANSWER= (B) Application Layer

 

2.Which of the following is NOT a feature of the AMQP protocol?

A) Closed Standard
B) Security
C) Reliability
D) Routing

ANSWER= (A) Closed Standard

 

3. There are a total of _________ number of AMQP frame types are defined that are used to initiate, control, and tear down the transfer of messages between two peers.

A) Seven
B) Eight
C) Nine
D) None of these

ANSWER= (C) Nine

 

4. The function/functions of the Queue component of the AMQP protocol is/are -

A) Receive messages and route them to queues
B) Separate queues for separate business process
C) Consumer receive messages from queues
D) Both (b) and (c)

ANSWER= (D) Both (b) and (c)

 

5. In the context of XMPP, which of the following correctly defines BOSH?

A) XML streaming
B) HTTP binding
C) Both XML streaming and HTTP binding
D) Binary encoding

ANSWER= (B) HTTP binding

 

6. Does MQTT support event-driven architecture?

A) Yes
B) No

ANSWER= (A) Yes

 

7. Which of the following is the acronym for “Extensible Messaging and Presence Protocol”?

A) EMPP
B) XMLP
C) XMPP
D) XMP

ANSWER= (C) XMPP

 

8. An IoT network requires communication mechanism, which is capable of synchronous as well as asynchronous communication. The mechanism should support both request-response, as well as publish-subscribe models. Which of the following protocol would be best suited for such a mechanism?

A) AMQP
B) CoAP
C) MQTT

ANSWER= (B) CoAP

 

9. Which of the following technique is used to transmit data frames in Beacon-enabled IEEE 802.15.4 networks?

A) unslotted CSMA/CA
B) slotted CSMA/CA
C) unslotted CSMA/CD
D) slotted CSMA/CD

ANSWER= (B) slotted CSMA/CA

 

10. What is the maximum size of hop limit in 6LoWPAN packet format?

A) 8-bit unsigned integer
B) 16-bit unsigned integer
C) 8-bit signed integer
D) 16-bit signed integer

ANSWER= (A) 8-bit unsigned integer

 

11. Which of the following is based on the publish-subscribe model?

A) MQTT
B) HTTP
C) HTTPS
D) All of these

ANSWER= (A) MQTT

 

12. In MQTT, a topic to which a client is subscribed is updated in the form of messages and distributed by the _______?

A) Publishers
B) Message Broker
C) Subscribers
D) All of these

ANSWER= (B) Message Broker

 

13. Which of the following is used when more than one level needs to be subscribed, such as the entire sub-tree, i.e., a multilevel wildcard?

A) +
B) #
C) \
D) None of these

ANSWER= (B) #

 

14. The CoAP protocol is designed for -.

A) Heavy Web Application
B) Publish-Subscribe Applications
C) Machine-to-Machine (M2M) applications
D)Both (a) and (b)

ANSWER= (C) Machine-to-Machine (M2M) applications

 

15. Which of the following statements is/are false?
Statement – I: IEEE 802.15.4 is a well-known standard for low data-rate Wireless Personal Area Network (WPAN).
Statement – II: IEEE 802.15.4 standard operates in the ISM band.

A) Statement - II
B) Statement - I
C) Both Statement I and II
D) None of these

ANSWER= (D) None of these

 

16. The IEEE 802.15.4 establishes functionalities in which layers?

A) Application and Session Layers
B) Transport and Data Link Layers
C) Network and Session Layers
D) Physical and Data Link Layers

ANSWER= (D) Physical and Data Link Layers

 

17. State whether the following statement is True or False.
Statement: Similar to traditional barcodes and QR codes, RFID tag data cannot be read outside the line-of-sight.

A) False
B) True

ANSWER= (A) False